#videoWall {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-around;
}
#videoWall .video_box {
  width: 30%;
  height: 500px;
  margin-top: 10px;
}
#videoWall .nourl {
  color: #fff;
  background-color: #000;
  text-align: center;
  line-height: 500px;
}
